BD7902 데이터 시트보기 (PDF) - Unspecified
부품명
상세내역
일치하는 목록
BD7902 Datasheet PDF : 18 Pages
| |||
Optical disc ICs
BD7902CFS
!Table of measure circuit switches position 1
(VCC=SPVM=SLVM=12V, DVCC=AVM=5V, VC=1.65V, RL (act) =8Ω, RL (SL) =8Ω+47µH, RL (SP) =2Ω+47µH,
SLRNF=0.5Ω, SPRNF=0.33Ω, H−=2.5V, HU+=2.6V, HV+=HW+=2.4V)
INPUT
Designation
VIN
Circuit current
IQ1
−
IQ2
−
IQ3
−
IST1
−
IST2
−
Sled driver block
VDZSL
*1
gmSL
*2
RONUSL
3.3V
(0V)
RONLSL
0V
(3.3V)
ILIMSL
3.3V
(0V)
fosc
1.45
CTL
SWITCH
1 2 RL SP SL IL
LH1 1 1 1
HL 1 1 1 1
LH1 1 1 1
LL1111
LL1111
HH2 1 1 1
HH2 1 1 1
HH1 1 2 2
HH1 1 2 2
HH2 1 1 1
HH2 1 1 1
Conditions
∗1 Check VSLRNF with no output at VIN=VC±15mV
Check VSLRNF with output at VIN=VC±65mV
See bellow
ILSL=500mA
RON= 12V − VOSL + (−)
0.5A
ILSL=−500mA
RON= VOSL + (−)
0.5A
Measure
point
IQVC
IQVC
IQDV
IQVC
IQDV
VSLRNF
VSLRNF
OUT+ (−)
OUT+ (−)
VSLRNF
VOSL+
lop
VRNF4/RNF
VRNF1/RNF
VRNF3/RNF VRNF2/RNF
VIN4 VIN3
Dead zone
SPRNF=0.33Ω
SLRNF=0.5Ω
VIN
VIN2 VIN1
∗2 Sled driver
VIN1=240mV, VIN2=140mV
VIN3=−140mV, VIN=−240mV
gm (+) =
(
VSLRNF1
240mV
−
−
VSLRNF2
140mV
)
/
0.5Ω
gm (−) =
(
VSLRNF4
240mV
−
−
VSLRNF3
140mV
)
/
0.5Ω
Iosp
Iosl
Iop
Iosp or Iosl
Iop...the peak current of Iosp or Iosl
Time
∗4 Spindle driver
VIN1=150mV, VIN2=100mV
VIN3=−100mV, VIN=−150mV
gm (+) =
(
VSPRNF1
150mV
−
−
VSPRNF2
100mV
)
/
0.33Ω
gm (−) =
(
VSPRNF4
150mV
−
−
VSPRNF3
100mV
)
/
0.33Ω
10/17
Share Link: 